Title:
OPTICAL WAVEGUIDE AND PRODUCTION OF GLASS THIN FILM
Document Type and Number:
Japanese Patent JP3442979
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an optical waveguide type optical amplifier with which higher density packaging and miniaturization as compared with the conventional optical amplifiers are possible and a process for production of a glass thin film applicable to the optical amplifier.
SOLUTION: The mother phase of the core of the optical waveguide provided with the glass thin film having the core and clad on a substrate contains the oxide of Te and the oxide of at least one kind selected from a group consisting of Zn, Bi, Li, Na, Al, W and La. Further, rare earth ions or transition metal ions are added into at least the core of the optical waveguide described above.
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Inventors:
Yoshiki Nishida
Atsushi Mori
Makoto Yamada
Yasutake Oishi
Atsushi Mori
Makoto Yamada
Yasutake Oishi
Application Number:
JP29114597A
Publication Date:
September 02, 2003
Filing Date:
October 23, 1997
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G02B6/13; G02B6/12; (IPC1-7): G02B6/12; G02B6/13
Domestic Patent References:
| JP6449662A | ||||
| JP59203709A | ||||
| JP8313945A | ||||
| JP8236841A | ||||
| JP8152531A | ||||
| JP8110535A | ||||
| JP715059A | ||||
| JP677579A | ||||
| JP5215930A | ||||
| JP460618A | ||||
| JP3187952A | ||||
| JP3159920A |
Attorney, Agent or Firm:
Yoshikazu Tani (1 person outside)